Synthesis, structural characterization and radiochemistry of “2+1” fac-[99mTc/Re(CO)3(L)(2-mercaptopyridine)] complexes, where L is phosphine or isocyanide

Tricarbonylrhenium(I) Complexes with N‐Heterocyclic Thiones and Selenols

“…There exists a relatively large number of transition metal complexes with this common ligand, and also a few compound having the tricarbonylrhenium(I) core are known. [11,14,[17][18][19]32,33] Most of them have been prepared with the addition of a base in order to promote deprotonation (which was not the case in our reactions). Of particular interest for comparison with our results might be the complex shown in Scheme 3: [Re 2 (CO) 6 (μ-N,S-Spy) 2 ].…”

“…Of particular interest for comparison with our results might be the complex shown in Scheme 3: [Re 2 (CO) 6 (μ-N,S-Spy) 2 ]. This dinuclear complex has been prepared either by a mild reaction starting from (NEt 4 ) 2 [Re(CO) 3 Br 3 ], HSpy and Na 2 CO 3 , [11] or www.zaac.wiley-vch.de ARTICLE Scheme 3. Previously performed reactions between common tricarbonylrhenium precursors and HSpy.…”

“…They have been included as coordination sites of pincer-type chelators [9,10] or used as components for so-called [2+1] complexes. [11] The structural chemistry of rhenium(I) tricarbonyl complexes with simple N-heterocyclic thiols mainly focuses to mercaptopyridine, mercaptoimidazol, mercaptopyrimidine or related ligands. [11][12][13][14][15][16][17][18][19][20] The heterocyclic thiols act in most of these complexes indeed as anionic thiolato or thionato ligands.…”

“…[11] The structural chemistry of rhenium(I) tricarbonyl complexes with simple N-heterocyclic thiols mainly focuses to mercaptopyridine, mercaptoimidazol, mercaptopyrimidine or related ligands. [11][12][13][14][15][16][17][18][19][20] The heterocyclic thiols act in most of these complexes indeed as anionic thiolato or thionato ligands. In many of the applied procedure, however, supporting bases without the addition of a supporting base and the sulfur-containing organic ligands are coordinated in their thione forms with the exception of Smetetraz -in its μS-bridging coordination mode in (NEt 4 )-[Re 2 (CO) 6 (μ-S-Smetetraz-κS)(μ-N,S-Smetetraz-κS,N) 2 ], which can be regarded as thiolate.…”

Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ 2O,O′)-(nitrato-κO)rhenium(I), C16H21O8N2F6Re

“…+ moiety, primarily because of its potential use in the design of new diagnostic and therapeutic radiopharmaceuticals [2][3][4]. A considerable amount of work, involving the rhenium tricarbonyl core has already been published from our group, and this study forms part of on-going research, aimed at studying the chelation behaviour and structure and reactivity of the rhenium(I) metal centre and other middle and late transition metal complexes' behaviour when coordinated to β-diketone types of ligands [5][6][7][8][9][10][11][12][13][14][15].…”